Not sure about Missouri but here in my part of Va it has been a cool wet year so far.
Lots of rain and just a few scattered days of high temps and humidity.
Today it’s so cloudy and cool I have to wear a jacket outside.
Usually by this time of year we have begun the run up to full summer temps.
So far every time the tomato and pepper plants start to flower we get a couple of cool rainy days and they get a growth spurt instead of setting fruit.
I haven’t had to water them but twice in the last 3 weeks.
I don’t care, I just love growing stuff.
We have had more rain so far this year, and cooler temps too. While we did have a few days of really hot weather, overall really is cooler.
I’m thinking that next year may be similar-all the volcanoes might be contributing to some cooling too.